Form-roller structure for printing presses



April20,1926. 1,581,584

. c. L. LOW

FQRM ROLLER swaucwvas FOR PRINTING PREssEs Filed Jul 'l, 1924 2 sneets-sn'eet 1 INVENTOR Giza/s. L .L0 L0 ATTORN E April 20 192s. M58133? C. L.' LOW v FORM ROLLER STRUCTURE FOR PRINTlNG FRI-355135 Filed .J uly 1., 1924 2 sheets sheet 2 a a 75 j 29 J 28 3 l 29 V V 18 Z7 INVENTOR WX EFNEY Patented Apr. 20, 1926,

UNITED STATE PTENT OFFICE. I

CHARLES I4. LOW, OF FRESNO, CALIFORNIA, ASSIGNOR TO LISENBY MANUFAOTUBING- COMPANY, OF FRESNO, CALIFORNIA, A CORPORATION.

FORM-ROLLER, STRUCTURE FOR PRINTING PRESSES.

Application filed July 1, 1924. Serial no. 723,515.

To all whom it may concern:

Be it known that I, CHARLES L. Low, a citizen ofthe United States, residing at Fresno,county of Fresno, State of California, have invented certain new and useful Improvements in. Form-Roller Structures for Printing Presses; and Ido declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings,'and to the characters of reference marked thereon,

j which form a part of this application.

form and fixed ink plates beyond the form on both ends, the press being especially de signed for two-color printing. The form roller units are disposed in fixed relation to the moving bed. there being one such unit for each plate adapted to take ink from the latterand distribute it over a certain por tion of the type on the form with the reciprocation of the moving bed.

One of the principal objects of my invention is to arrange and mount each unit so that it is readily adjustable horizontally rela tive tothe type form. so that the unit, with the reciprocationof the bed through a fixed distancewill cover and ink different amounts of type v on the form.

By this means, only a few lines of type on the form from one end thereof may be inked with one color, or a greater number of lines may be so inked, depending on the setting of the form roller unit relative to the limits of movement of the form.

The other form roller unit may be correspondingly and independently arranged,

so as to ink the necessary amount of type with another color from the opposite end of the form.

Another main object is to provide for a positive and even distribution of ink over the surfaces of the form rollers regardless of the ,even spread of ink on the ink plate,

so that the type in turn will be evenly inked.

A further object of the invention is to produce a simple and inexpensive device and yet one which will be exceedingly efiective for the purposes for which it is designed.

These objects I accomplish by means of such structure and relative arrangement of parts as will fully appear by a perusal of the following specification and claims.

In the drawings similar, characters of ref erence indicate corresponding parts in the several vlews.

Fig. 1 is a fragmentary side outline of a press, partly broken out, showing my improved form roller units mounted thereon.

Fig. 2 is a top plan view of a roller unit.

Fig. 3 is an end View of the same.

Flgs. 4 and 5 are cross sections both on the line 4-4 of Fig. 3, looking in opposite directions. i I 'Referring now more particularly to the characters ofreference on the drawings, the press includes a frame or stand 1, having a reciprocating moving bed 2 slidably mounted therein. 1 This bed is reciprocated through a fixed distance by means of a link 3 attached thereto and to a rocking lever 4 which is oscillated by a connecting rod 5 attached thereto and to the crank 6 of a driven shaft 7 V The bed has a centrally disposed typeform 8, adapted to cooperate with a printing cylinder 9 thereabove, and fixed ink plates 10 beyond'the form at both endsthereof.

For each ink plate is a form roller unit, each comprising transversely spaced blocks 11 and.12 disposed above the side rails 1 of the frame. The block 11 is turnably and slidably mounted on a rigid rod 13 of a greater length than the block'mounted on the adjacent side raill The other block 12 rests on the opposite side rail 1 and is adjustably clamped thereto by suitable clamping means 14 mounted on the block and engaging the under side of the overhanging flange of said side rail.

Journaled in and extending between said blocks is a shaft 15 having a pinion 16 meshing with a rack 17 fixed in connection with the moving bed and. extending lengthwise thereof adjacent one side rail. Thls pinion meshes with a gear 18 of greater width than the pinion fixed on a shaft 19 slidably journaled in the blocks above the shaft 15. A roller 20 is fixed on the shaft 19 between the gear and the opposite block.

On one end of the shaft 19, outwardly of the block 11, is a circumferentially grooved disc 21 in the groove of which projects a roller 22 mounted on the upper end of an arm'23 adjustably fixed at its lower end on a horizontal shaft 24 journaled on the frame 1 outside the same.

This shaft is oscillated through a certain arc, so as to impart a transverse reciprocatory movement the the upper end of the arm 23, by means of a rod 25 having an eccentric connection with the drive shaft 7 and projecting upwardly thence to a connection with a crank 26 on the shaft 24. By reason of this construction, it will be seen that with the rotation of the shaft 7, the shaft 2 1 is constantly oscillated, imparting a constant reciprocation to the arm 23 and consequently a similar movement to the shaft 19 and roller 20. The width of the gear 18 relative to the longitudinal movement of the shaft 19 is such that the gear is always maintained in mesh with the pinion 16.

Bearing blocks 27 are pivotally mounted on the blocks 11 and 12, on pins 27 in spaced relation longitudinally of the press for rocking movement in a longitudinal vertical plane. These bearing blocks partly overhang the main blocks 11 and 12. on which they are mounted, and are clamped against rocking movement in any desired posltlon by means of adjustment screws 28 mounted in the overhanging portions of said blocks 27 on both sides of their swivel connections and bearing against the upper faces of the main blocks 11 and 12.

Shafts 29 are removably journaled in the blocks 27 and carry the ink rolls .30 of the usual soft composition, the roller 20 being of steel or the like. The rolls are arranged to engage both the roller 20 and the ink plates, as well of course as the type on the form 8.

The individual adjustability of the blocks 27 in which said rolls are mounted enables the degree of contact of the rolls with the above named elements to be regulated as may be necessary.

By reason of the constant rubbing action of the roller 20 along the rolls 30, in addition to its rotary movement, it will be clear that any ink on said rolls will be evenly dis tributed over the surface thereof.

Since the type form can only advance to a certain point in the length of the press frame on which the roller units are fixed, it will be evident that if the latter are shifted along the frame in one direction or the other, the extent of length of the type form which they will overhang or cover with the reciprocation of the bed will differ with different settings of the roller units. hen the units are thus adjusted the arms 23 are of course shifted also to maintain their proper positions relative to said units.

If the clamp means 14: is disengaged from the side rail of the frame, the roller unit may be swung up about the rod 13 as an axis without disconnecting or removing any part, thus enabling the ink plate to be cleaned without interference.

From the foregoing description it will be readily seen that I have produced such a device as substantially fulfills the objects of the invention as set forth herein.

WVhile this specification sets forth in detail the present and preferred construction of the device, still in practice such deviations from such detail may be resorted to as do not form a departure from the spirit of the invention as defined by the appended claims.

Having thus described my invention what I claim as new and useful and deslre to secure by Letters Patent 1s:

1. In a printing press having a frame,

and a type-form mountedtherein for reciprocation through a fixed distance, a form roller unit mounted on the frame above the plane of the form for longitudinal sliding adjustment, said unit including supporting blocks above the side rails of the frame,

a longitudinally disposed rod supported from the frame and on which one of the blocks is bothslidably and turnably mounted, and clamping means disengageable at will between the other block and the adjacent frame member, whereby to allow the unit to be swung upwardly about the rod as an axis.

2. In a; printing ,press having spaced frames, a form rollerunit extending transversely thereof, and a member fixed on one frame and on which the adjacent end of the unit is both pivoted and longitudinally adjustable, the otherend of said unit resting on the opposite frame, and means mounted on said last named end of the unit for enabling the same to be detachably clamped onto the frame.

3. In a printing press having spaced frames, a form roller unit mounted on the frames and extending transversely thereof, said unit including end members, and, a single supportingmeans between one frame and one of said end members for enabling the unit to be both moved longitudinally of the frame and swung upwardly about said means as an axis, the other end member resting on the opposite frame. 1

4. A form roller structure comprising main supporting members,'a roller journaled therein and extending therebetween, blocks pivoted onto said members to one side of ing movement in planes at right angles to a roll, a shaft extending longitudinally of 10 the axis of the roller, adjustment screws the frame, means for oscillating said shaft threaded through the blocks to the sides of with the operation of the press, a grooved their pivots, and bearing against the supmember mounted in axial connection with 5 porting members, and an ink roll supported the roll, and an arm engaging said member by the blocks. and adjustably clamped on the shaft for 15 5. In a printing press having a frame a longitudinal adjustment thereon.

form roller unit mounted thereon for lon- In testimony whereof I affix my signature. gitudina'l adjustment, said unit including CHARLES L. LOW. 

